Effective separation of ciprofloxacin from aqueous solutions using BiOCl/Bi2S3/biochar hybrid structure fabricated via ultrafast solid-state reaction

Applied Water Science, Journal Year: 2025, Volume and Issue: 15(4)

Published: March 24, 2025

Abstract Developing a product that serves dual purpose as an adsorbent/photocatalyst for ecological applications is compelling study area. This article discusses facile ultrafast synthesis of BiOCl/Bi 2 S 3 /biochar (BiOCl/Bi /BC) by solid-state reaction with coupled roles photocatalyst during sunlight exposure and adsorbent when there no light. /BC was characterized XRD, SEM, EDX, HR-TEM, XPS, FTIR, Raman, DR/UV–Vis spectroscopy techniques. The adsorption efficiency its parameters were explored using ciprofloxacin (CPF) contaminant model drug in the absence light irradiation. role considered under direct 30 achieved removal 81.25% dark reached 90% within 1 h. exhibited triplet initial rate, doubled rate constant photocatalysis (11.34 mg g −1 min , 0.642 ) compared to (3.88 0.256 ), respectively, indicating adsorptive, catalytic, cocatalytic BC. Mechanism studies indicated separated CPF via electrostatic interaction, π – conjunction, hydrogen bonding while occurred through S-scheme mechanism where • O − h + play predominant photocatalytic degradation. Besides, hybrid stable revealed acceptable recyclability after four consecutive cycles from their aqueous solutions. work provided ultrafast, simple, economical, efficient strategy application structure has function elimination water.

Language: Английский

Adsorption of Methylene Blue Dye from Textile Industry Effluent using Activated Carbon Synthesized from Various Plant-Based Precursors

Oriental Journal Of Chemistry, Journal Year: 2025, Volume and Issue: 41(2), P. 665 - 674

Published: April 28, 2025

Methylene blue dye is used in textile industry. Through effluent discharge, it enters water bodies and pollutes them. It can cause skin cancer other health problems. Adsorption of methylene by activated carbon analyzed this article. Dye removal efficiency synthesized from Denolix Regia pods 99.9%. The exact fitness Freundlich’s model proving that the adsorption process multilayer at room temperature. Kinetics data fit well to pseudo second order model, so rate determining step chemisorptions. As intraparticle diffusion kinetic also good, involves transport molecules within pores carbon. ∆G < -20 KJ/mol, physisorption operating mechanism. A list adsorbent carbons plant-based precursors considered for treatment purpose. These findings show surface heterogeneous multi-layered, nature physical. In general, material promising be scaled up industrial level.

Language: Английский

A Review of Wastewater Pollution by Diuron: From Its Origin to Treatments for Safe Reuse

Water, Journal Year: 2024, Volume and Issue: 16(23), P. 3524 - 3524

Published: Dec. 7, 2024

By 2030, the global deficit in freshwater resources is projected to reach 40%, direct correlation with population growth. To cope this increase demand, Sustainable Development Goals outlined by United Nations, specifically goal No. 6 of 2030 agenda, have identified wastewater as a new resource. Indeed, reuse offers three primary advantages: (i) Reused can serve an alternative water from natural reserves, particularly sensitive geographical areas experiencing stress. (ii) Wastewater limits discharge treated into environment, which often source pollution, thus helping preserve ecosystems. (iii) also facilitates extraction valuable compounds, such fertilisers and precious metals, along energy generation. This review focuses on various uses treatment plants (WWTPs). The focus then shifts pesticides, exploring origins these emerging contaminants their impacts aquatic environments. An in-depth analysis diuron follows, examining its origin, toxicity regulation performance existing advanced treatments produce safe WWTP effluents.

Language: Английский